Lifting-jack.



FRED W. STICE AND WILLIAM M. STICE, OF ARDON, IOWA.

LIFTING-JAGK.

Specification of Letters Patent.

Patented Dec. 21, 1909.

Application filed December 17, 1908. Serial No. 468,031.

To all whom it may concern:

Be it known that we, FRED WV. STICE and lViLLiAM M. Srion, citizens ofthe United States, residing at Ardon, in the county of Muscatine andState of Iowa, have invented certain new and useful Improvements inLifting-Jacks; and we do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to improvements in lifting jacks and comprisesthe construction of a compound lifting jack particularly designed foruse in connection with vehicles.

One of the objects of the invention is the production of a lifting jackwhich may be readily secured under a vehicle axle and operatedthereunder without damaging the vehicle.

Another object of the invention is the production of a lifting jackcomprising a guide frame and an adjustable support movable on the guideframe and provided with a lever operated lifting bar.

1V ith the foregoing and other objects in view, the invention consistsof certain novel features on construction, combination and arrangementof parts as will be more fully described and particularly pointed out inthe appended claims.

In the accompanying drawings, Figure 1 is a side elevation of ourimproved lifting jack; Fig. 2 is an end elevation; Fig. 3 is a verticalcentral longitudinal sectional view taken on line 3-3 of Fig. 2, withthe operating lever shown in dotted lines in its raised position, and,Fig. L is a horizontal sectional view taken on line 4- 1 of Fig. 1.

In the drawings the preferred embodiment of our invention is illustratedin which the numeral 1 designates the base on which is secured anupstanding guide frame 2. The guide frame 2 comprises a pair of sidepieces 3 which are formed with longitudinally disposed slots l and endpieces 5 and 6, which are secured to the ends of the side pieces 3 andspaced apart to form openings 7 and 8. A block 9 is rigidly mounted onthe end pieces 5 near their upper ends and in the opening 7 and a pawl10, which is provided with a handle 11, is pivotally scoured to the endpieces 5 above the upper end of the block 9.

A spring 12 is mounted on the block 9 and is adapted to hold the pawl 10in alinement with the side pieces 5. A handle 13 is mounted on one ofthe end pieces (3 in order that the jack may be readily grasped andmoved from place to place. An adjustable support comprising an integraltubular structure having side pieces 11. and 15 is mov able within theguide frame. 2, said side pieces being spaced apart by the integral endpieces 16 and 17, the end pieces 16 being formed with a series ofratchet teeth 18. The end pieces 16 and 17 are arranged flush with theupper ends of the side pieces 1t and 15 and have their lower ends cutotf above the lower ends of said side pieces so as to form an opening19. V

The lower ends of the side pieces l t and 15 are formed with transverseopenings 20 and a lever 21, which is provided with a cam 22, ispivotally secured, by means of a bolt 23 arranged in the openings 20, tosaid side pieces. A lifting block 2% is confined within the adjustablesupport and is adapted to be raised thereon when the lever 21. isdepressed.

In its normal position the adjustable sup port rests upon the base 1 andthe pawl 10 is held in positive engagement with the ratchet teeth 18 ofthe side piece 17. \Vhen it is desired to utilize the jack for liftingpurposes, the adjustalde support and the lifting bar 21 are moved underthe axle of the vehicle and said support is moved into engagement withthe axle, the pawl 10 preventing the support from moving downwardly onthe guide frame 2. \Vhcn it is desired to lift an axle, the lever 21. isdepressed thereby forcing the lifting bar 21: upwardly from theadjustable support where it will be he] d by the pressure of said barupon the cam 22. \Vhcn not in use, the lever 21 is partly confinedwithin the opening 8 by the side pieces (3 and said lever may beprovided with suitable stop means for controlling its movement by stepsshould the same be desired.

From the foregoing description taken in connection with the accompanyingdrawings, the construction and operation of the invention will bereadily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of the invention, as defined in theappended claims.

lVe claim as our invention 1. In a device of the class described, aguide frame, an adjustable support movable Within the guide frame, aself locking lever pivoted to the adjustable support, and a lifting baroperated by the lever movable Within said adjustable support.

2. In a device of the class described, a base, an upstanding guide framearranged on the base, an adjustable support movable Within the guideframe, a self locking lever pivoted to the adjustable support, and alifting bar operated by the lever arranged Within said support.

3. In a device of the class described, a base, a guide frame arranged onthe base, an adjustable support provided With ratchet teeth movableWithin the guide frame, a

pawl pivoted to'the guide frame for controlling the movement of theadjustable support a lifting bar slidably mounted in the support andlifting self locking means arranged on the adjustable supportto supportsaid bars.

l g l l 4. In a device of the class described, a 5

base, a guide frame arranged on the base, an adjustable support movableWithin the guide frame, said adjustable support being formed Withratchet teeth, a paWl pivoted to the guide frame arranged to control themovement of the adjustable support, a lever pivoted to the adjustablesupport provided With a cam arranged thereon, and a lifting blockmovably arranged Within the adjustable support and adapted to be engagedby j the cam.

In testimony whereof We have hereunto set our hands in presence of twosubscribing Witnesses.

FRED W. STICE. VILLIAM M. STICE. Vitnesses to signature of Fred WV.Stice:

A. J. WOLF, J OHN WV. ORoWE. lVitnesses to signature of Villiam M.Stice:

THos. J. MANNING,

F. EU'rsLnn.

